Sink



FIG. 1 is a left, top, front perspective view of a sink according to my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof with front side sink environment broken away, the claimed design being shown as viewed from line 3-3 of FIG. 2;

FIG. 4 is a right side elevational view thereof with right side sink environment broken away, the claimed design being shown as viewed from line 4-4 of FIG. 2;

FIG. 5 is a left side elevational view thereof with left side sink environment broken away, the claimed design being shown as viewed from line 5-5 of FIG. 2; and,

FIG. 6 is a right, top, front perspective view of a sink according to another embodiment of our my new design in which the top plan and front, right side and left side elevational views thereof are mirror images of the views shown in respective FIGS. 2-5.

The broken lines in the figures are for the purpose of illustrating unclaimed surfaces or environment of the design, which do not form part of the claim. 

The ornamental design for a sink, as shown and described. 